Grid autocomplete editor

Grid autocomplete editor

Here's a hacked up example of adding autocompletion to a grid... it's not very clean, but it should be a decent starting point. I basically hacked up the TextEditor for a few hours to get it to work, the only problems I've noticed so far are the edit box ends up not being sized perfectly and the AutoComplete widget grabs the up and down arrow keys so they no longer navigate the grid: